Indeed, there is a reason why this chair is also called as zero gravity chair. Here, you will be able to sit comfortably as you sit on the usual chair. But as you push the back of the chair, you will be able to move your body or back further even to the sleep position. You will not need to worry about your balance. There is a reason why it is called as gravity chair. You will be in the good balance even though you are in the sleeping position. It is so comfortable.